Canreef Aquatics Bulletin Board  

Go Back   Canreef Aquatics Bulletin Board > General > Reef

Reply
 
Thread Tools Display Modes
  #1  
Old 11-26-2013, 07:50 PM
Doug's Avatar
Doug Doug is offline
Rest In Peace
 
Join Date: Aug 2001
Location: Kamloops BC
Posts: 4,920
Doug has disabled reputation
Default Enlarging bulkhead hole

Can you enlarge a 1 1/8th drilled hole to 1 3/4, so they can take a 1in bulkheads?

I cant even get a 3/4in bulkhead in there, as I planned on. Even that takes a 1 1/2 in or 1 7/16in. hole. Only other option is to go with 1/2in and then enlarge stacks to 1in. but still a 1/2 in drain. I would then have two 1/2in drains and a 1in main drain for my bean
__________________
Doug
Reply With Quote
  #2  
Old 11-26-2013, 09:21 PM
sphelps's Avatar
sphelps sphelps is offline
Member
 
Join Date: May 2006
Location: Lyalta, East of Calgary
Posts: 4,777
sphelps is on a distinguished road
Default

It can be done by drilling another hole around it but unlikely anyone would attempt it. Better just to work with what you have, I'd use the two 1/2" lines for the primary and secondary and the 1" as the back up. I'd also up the line size before and after the bulkhead to 1" like you mentioned, 1/2" bulkhead with 1" line will flow a decent amount, much more than 1/2" line throughout and not much less than a full 1".
Reply With Quote
  #3  
Old 11-26-2013, 09:26 PM
LoJack's Avatar
LoJack LoJack is offline
Member
 
Join Date: Feb 2010
Location: Thompson, MB
Posts: 257
LoJack is on a distinguished road
Default

Definitely risky to drill around it. I would do it if it was a brand new bit, and I'd be the most patient man on the planet … but still no guarantee's

Can you fit any sort of plug into it? I have a tank that was drilled once and I didn't need to use a sump anymore, so I inserted plugs into the threaded bulkheads with teflon tape so that I could just use it as a regular tank.

If this is an option, I'd consider plugging those off and drilling new holes where you want them. Not ideal, but probably less risk of crackle/breakage going that way. Assuming the original bulkheads don't leak I suppose.
Reply With Quote
  #4  
Old 11-26-2013, 10:01 PM
monocus monocus is offline
Member
 
Join Date: Jan 2010
Location: burnaby
Posts: 1,024
monocus is on a distinguished road
Default hole

make yourself a jig for the new hole so your drill doesn't move around using 1/4 " plywood.be patient and go slowly.
Reply With Quote
  #5  
Old 11-26-2013, 11:16 PM
Doug's Avatar
Doug Doug is offline
Rest In Peace
 
Join Date: Aug 2001
Location: Kamloops BC
Posts: 4,920
Doug has disabled reputation
Default

Thanks for the great advice guys. I decided that if I need a new bit anyways, to order a 1.75 bit for a new 1in. bulkhead in the back. I also ordered a pair of 1/2 in. bulkheads for the two bottom holes. One will be brought up to a 1 in. stack and drain line as per Steves suggestion. The other to 3/4 in. for my return line.

Sounds good, as long as the second hole drilling goes good. At least this time I will be using a new bit.
__________________
Doug
Reply With Quote
  #6  
Old 11-27-2013, 12:37 AM
Evilweevil's Avatar
Evilweevil Evilweevil is offline
Member
 
Join Date: Sep 2012
Location: Sylvan lake
Posts: 130
Evilweevil is on a distinguished road
Default

Just go to princess auto they drill fine and go with the plywood jig like mono us said go slow and don't use a lot of pressure it will drill fine
Reply With Quote
  #7  
Old 11-27-2013, 01:14 AM
Doug's Avatar
Doug Doug is offline
Rest In Peace
 
Join Date: Aug 2001
Location: Kamloops BC
Posts: 4,920
Doug has disabled reputation
Default

Quote:
Originally Posted by Evilweevil View Post
Just go to princess auto they drill fine and go with the plywood jig like mono us said go slow and don't use a lot of pressure it will drill fine

Thanks. I was thinking, since getting the right bit, instead of drilling new hole in the back I may just try widen the smaller ones, with the wooden jig idea.



BUT


what if bottom is tempered.......
__________________
Doug
Reply With Quote
  #8  
Old 11-27-2013, 01:53 AM
Maverick00 Maverick00 is offline
Member
 
Join Date: Mar 2010
Location: Vancouver Island
Posts: 380
Maverick00 is on a distinguished road
Default

+1 on the wooden jig, i made mine out of a 2x4 with a "water inlet" on the top of the hole and "water outlet on the bottom of the hole using a file. You have 5/16" to work with per side which should be plently as long as you go slow and keep the drill as straight as possible clearing the glass "dust" from time to time.

Lots of info on the net on how to test for tempered glass, I thought it had to do with looking at the glass with polarized sunglasses with a smartphone screen illuminated on the other side. I personally wouldnt touch tempered glass.
__________________

- 33 Gal - 20Gal Sump, MP10/Hydor Powerheads, Aquaticlife 4x T-5HO, Vertex IN100, TLF w/Biopellets, Tunze ATO

-45GAL Build in Progress!-
Reply With Quote
  #9  
Old 11-27-2013, 02:58 AM
Evilweevil's Avatar
Evilweevil Evilweevil is offline
Member
 
Join Date: Sep 2012
Location: Sylvan lake
Posts: 130
Evilweevil is on a distinguished road
Default

Does it already have holes in the bottom ? It's probably not tempered if it does but this is just a guess
Reply With Quote
  #10  
Old 11-27-2013, 03:03 AM
Doug's Avatar
Doug Doug is offline
Rest In Peace
 
Join Date: Aug 2001
Location: Kamloops BC
Posts: 4,920
Doug has disabled reputation
Default

Yes it does and you,re most likely correct. I have read where they drill the glass first then temper it however. Now that would be my luck.
__________________
Doug
Reply With Quote
Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT. The time now is 11:42 PM.


Powered by vBulletin® Version 3.7.3
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.